208729880 has 16 divisors (see below), whose sum is σ = 469642320. Its totient is φ = 83491936.

The previous prime is 208729879. The next prime is 208729883. The reversal of 208729880 is 88927802.

208729880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208729883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609084 + ... + 2609163.

It is an arithmetic number, because the mean of its divisors is an integer number (29352645).

Almost surely, 2^208729880 is an apocalyptic number.

208729880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208729880 is an abundant number, since it is smaller than the sum of its proper divisors (260912440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208729880 is a wasteful number, since it uses less digits than its factorization.

208729880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218258 (or 5218254 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 208729880 is about 14447.4869787102. The cubic root of 208729880 is about 593.1914388066.

The spelling of 208729880 in words is "two hundred eight million, seven hundred twenty-nine thousand, eight hundred eighty".